<!DOCTYPE html><html><head><meta charset="UTF-8"><script type="text/javascript" src=‘jquery-1.7.2.js‘ ></script> <title>Insert title here</title><script type="text/javascript"> ???$(function() { ???????????????//获取选中的值 ??value--值 ?text--文本 ???????//1. ???????/* $("select :selected").each(function() { ???????????//alert(this.value); ???????????alert(this.text); ???????}); ?*/ ????????//2. ???????//alert($("#se").val()); ???????//alert($("#se").text()); ???????//3. ???????//alert($("#se").find("option:selected").text()); ???????//alert($("#se").find("option:selected").val()); ???????//4. ???????//alert($("#se").get(0).value); ???????????????//获取索引值 ???????//alert($("#se").get(0).selectedIndex); ???????//alert($("#se option:first").attr("index")); ???????????????//alert($("#se option:first").val()); ???????????????????????//添加 ???????//$("#se").append("<option value=‘1‘>11</option>"); ?????????// $("#se").prepend("<option value=‘1‘>11</option>"); ??????????????????????????????//内容清空 ???????//$("#se").empty(); ???????????????//删除 ???????//$("#se option:last ").remove(); ???????//$("#se option:[value = ‘3‘] ").remove(); // 删除value 值为3 ???????//$("#se").remove(); ???????????????//设置被选中 ???????//$("#se option:[value = ‘3‘] ").attr("selected",true); ???????????????// 默认值改变第一个 ???????//alert($(" option:first").text(0)); ???});</script></head><body><select id=‘se‘><option value=‘2‘>22</option><option value=‘3‘>33</option></select><select id=‘s2‘><option value=‘2‘>22</option><option value=‘3‘>33</option></select></body></html>JQuery ?操作select
原文地址：https://www.cnblogs.com/lxh520/p/9078312.html